I have just purchased a Western Digital 1TB external H/drive. The drive comes with MAC applications including an "Anywhere backup" app. It seems to have the same functionality as Time Machine except for the ability to revert to a specific backup date (I could be wrong on this as the user info is wanting). Can anyone advise me on which backup is the better - Time Machine or the WD? I'm quite partial to the Time Machine but am open to new ideas.